Wrench.



J. NIELANDER.

WRENCH.

APPLICATION FILED DEC-1. lam.

1,301,159. Patented Apr. 22,1919.

2 SHEETS-SHEET I.

J. NIELANDERQ wmzmcu. 1 APPLICATION FILED DEC.1| HHT- 1,301,159.Patented Apr. 22,1919.

2 SHEETS-SHEET 2.

anwmboz Joseph Nielqflder hurrah srarns PATENT enrich.

JOSEPH NIELANIDER, 0F KOKOMO, INDIANA.

WRENCH;

To all whom it may concern:

Be it known that I, JOSEPH NIELANDER, a citizen of the United States,residing at Kokomo, in the county of Howard and State of Indiana, haveinvented new and useful Improvements in Wrenches, of which the followingis a specification.

This invention relates towrenches of the sliding jaw type which arecapable of use either as a nut or pipe wrench.

The primary object of the invention is to provide a wrench which may beeasily and quickly adjusted for use and when so adjusted will besecurely held in position, the arrangement of the various elements beingsuch as to more tightly lock them when strain on the jaws of the wrenchis greatest.

Another object is to provide a cheap simple and inexpensive wrenchpermitting its sale at a normal cost, and reducing liability to breakageof the various parts used in its construction.

The invention therefore consists of a wrench having a novel form ofadjusting a locking means embodying a pivoted shaft carried by themovable jaw and having mounted thereon a freely rotatable lockingmember, the opposite end of the shaft being engaged by an operating dogalso pivoted to the movable jaw, so that the said locking member may bemoved into and out of engagement with a rack formed upon the shank ofthe wrench.

The invention further consists of the following novel combination andarrangement of parts, hereinafter more fully described and illustratedin the accompanying drawings, in which:

Figure 1 is a side elevation of a wrench embodying the invention, themovable jaw being shown locked to the shank.

Fig. 2 is a view similar to Fig. 1 with the locking member disengagedfrom the shank and a portion of the movable jaw broken away to moreclearly show the manner in which the locking member is secured thereto.

Fig. "3 is a transverse sectional view on the line 3-3 of Fig. 1.

Fig. 4 is a detailed perspective view of the movable jaw detached fromthe wrench.

Fig. 5 is a similar view of the pivoted shaft.

Fig. 6 is a detailed perspective view of the operating dog.

Fig. 7 is a view similar to Fig. 1 showing a modified form of wrench.

Specification of Letters Patent. Patented A131. 22, 1919. Applicationfiled December 1, 1917. Serial No. 204,802. I

wrenchshown in Fig. and

Fig. 9 is a detailed perspective view of the sleeve within which themovable jaw is adjusted in the modified form shown in Figs. 7 and 8. i Y1 Referring in detail to the drawings and more especially to Figs. 1 to6 inclusive, the improved wrench comprises a shank 10 of preferablyrectangular cross section, which has secured orformed uponv one end astationary jaw 11 and upon itsoppositeend a Fig. 8 is a view similar toFig. 2 of the handle 12, the latter being secured thereon by any desiredmeans. j

Mounted for movement longitudinally of the shank 10 is a movable jaw.13, the said jaw carryinga sleeve 1 1, through which the shank 10' isdesigned to pass. Mounted within the movable jaw 13 in a recess 15 upona pivot pin 16, is a shaft 17. This shaft is formed with a rectangularhead 18, having an opening 19 therethrough for the passage of the pin16. The head 18 is so positioned within the recess 15 as to provide aspace between the end of the head and the end wall of the recess: 15 andsecured to this head is one end of a spring 20', the opposite end of thespring bearing against the said end wall in a manner to normally forcethe free end of the shaft 17 toward the shank of the wrench.

The free end of the shaft 17 is reduced as shown at 21, this reduced endbeing received within a notch 22 formed in one end of an operating dog23, which latter is pivoted between ears 9A carried by the movable jaw,the pin upon which the dog is pivoted being shown at 25. The end of thedog opposite the notch 22 is formed with a finger piece 26, by means ofwhich the dog is manipulated to move the shaft 17 away from and towardthe shank 10.

Mounted to freely rotate upon the shaft 17, between the shoulder 27formed at the juncture of the said shaft with the head 18, is a lockingmember 28, which consists of a sleeve formed with a screw thread 29,which are adapted to engage the teeth of a rack 30 provided upon oneedge of the shank 10, for the purpose of final adjustment of the jaw 13and for locking the said jaw in its adjusted position.

To operate the wrench the finger piece 26 ment with the rack 30,permitting the movable jaw to freely slide along the shank.

' is adapted to slide through a sleeve 33, se-

cured as shown at 34: to the stationary jaw 35. Pivoted within a recess36 provided in the sleeve 33 is a shaft 37, similar in construction tothe shaft 17 and mounted upon this shaft for free rotation is a sleeve38, which is adapted to engage the rack 39 formed on the shank 32. Anoperating dog 40 also similar in construction to the dog 23 is pivotedwithin ears ell carried by the sleeve 3 3,the adjustinent of the wrenchbeing the same as in the form previously described. The jaws 31 and 35have their opposed faces serrated as shown at 42 in order to provide agrip upon a pipe or other cylindrical object.

'Various changes in the form, proportion and minor details ofconstruction may be made without departing from the spirit orsacrificing any of the advantages of the invention.

Having described the invention what is claimed is:

A wrench embodying a shank, a stationary jaw thereon, a toothed rackformed on said shank, a sleeved jaw mounted for movement along saidshank, a shaft having one end pivotally mounted in the sleeve of themovable jaw, a locking member rotatably mounted on said shaft forengagement with the toothed rack, an operating dog also pivotallymounted in the sleeve of the movable jaw and means engageable with thepivot end of shaft, whereby the locking member will be yieldingly heldin alocked or unlocked position.

In testimony whereof I afiiX my signature.

JOSEPH NIELANDER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, i Washington, D. 0."

